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Table 5 Risk Factors affecting 5-year disease-specific survival rate determined by Cox’s regression analysis

From: Clinical significance of erythropoietin receptor expression in oral squamous cell carcinoma

Variable Relative risk 95% Confidence interval p-Value
T classification
T3, T4 vs. T1, T2 2.152 1.103–4.202 0.025
N classification
Positive vs. Negative 2.651 1.766–4.763 <0.001